public IEnumerable <IEmergingPattern> Mine(InstanceModel model, IEnumerable <Instance> instances, Feature classFeature)
{
EmergingPatternCreator EpCreator = new EmergingPatternCreator();
IEmergingPatternSimplifier simplifier;
if (Multivariate)
{
simplifier = new EmergingPatternSimplifier(new MultivariateItemComparer());
}
else
{
simplifier = new EmergingPatternSimplifier(new ItemComparer());
}
List <IEmergingPattern> patternsList = new List <IEmergingPattern>();
if (MinePatternsWhileBuildingTree)
{
DecisionTreeBuilder.OnSplitEvaluation =
delegate(IDecisionTreeNode node, ISplitIterator iterator, List <SelectorContext> currentContext)
{
IChildSelector currentSelector = null;
for (int i = 0; i < iterator.CurrentDistribution.Length; i++)
{
double[] distribution = iterator.CurrentDistribution[i];
if (EPTester.Test(distribution, model, classFeature))
{
if (currentSelector == null)
{
currentSelector = iterator.CreateCurrentChildSelector();
}
EmergingPattern ep = EpCreator.ExtractPattern(currentContext, model, classFeature,
currentSelector, i);
ep.Counts = (double[])distribution.Clone();
patternsList.Add(simplifier.Simplify(ep));
}
}
};
DoMine(model, instances, classFeature, EpCreator, null);
}
else
{
DoMine(model, instances, classFeature, EpCreator, p =>
{
if (EPTester.Test(p.Counts, model, classFeature))
{
patternsList.Add(simplifier.Simplify(p));
}
}
);
}
return(patternsList);
}
public IEmergingPattern Simplify(IEmergingPattern p)
{
EmergingPattern result = new EmergingPattern(p.Model, p.ClassFeature, p.ClassValue);
if (p.Counts != null)
{
result.Counts = (double[])p.Counts.Clone();
}
if (p.Supports != null)
{
result.Supports = (double[])p.Supports.Clone();
}
_collection.SetResultCollection(result.Items);
_collection.AddRange(p.Items);
return(result);
}
